This easy worksheet keeps the steps short while sharpening pattern vocabulary. Third graders correct sentences about 25, 30, 35, 40 and the subtract-2 rule hidden inside 10, 8, 6, 4, then fill in the add-7 rule for 14, 21, 28, 35 and predict what comes after 40, 36, 32, 28. A repeating A, B, B letter pattern and an input-output table using subtract 4 round things out, plus true-or-false statements about growing patterns.
Students leave able to spot whether a sequence grows or shrinks and to state the exact rule that drives it.
Style:
Patterns and Number Sequences
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1. Fix the sentence:
The next number in 25, 30, 35, 40 is 50.
Rewrite: The next number in 25, 30, 35, 40 is 45.
2. Fix the sentence:
The pattern 10, 8, 6, 4 uses the rule add 2.
Rewrite: The pattern 10, 8, 6, 4 uses the rule subtract 2.
3. Fix the sentence:
The pattern 9, 12, 15, 18 continues with 22.
Rewrite: The pattern 9, 12, 15, 18 continues with 21.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. The pattern 14, 21, 28, 35 follows the rule add 7.
2. What comes next in 40, 36, 32, 28, 24?
3. In the repeating pattern A, B, B, A, B, B, the next letter is A.
4. An input-output table uses the rule subtract 4. If the input is 20, the output is 16.
Part C: True or False?
Read each statement. Circle True or False.
1. The pattern 6, 9, 12, 15, 18 uses the rule add 3.
True False
2. If the input is 5 and the rule is add 10, the output is 20.
True False
3. In a growing pattern, each number is larger than the one before it.
True False
Patterns and Number Sequences
★ Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1) Fix the sentence:
The next number in 25, 30, 35, 40 is 50.
Rewrite: The next number in 25, 30, 35, 40 is 45.
2) Fix the sentence:
The pattern 10, 8, 6, 4 uses the rule add 2.
Rewrite: The pattern 10, 8, 6, 4 uses the rule subtract 2.
3) Fix the sentence:
The pattern 9, 12, 15, 18 continues with 22.
Rewrite: The pattern 9, 12, 15, 18 continues with 21.
★ Part B: Fill in the Blank
Write the missing word or number on each line.
1) The pattern 14, 21, 28, 35 follows the rule add 7.
2) What comes next in 40, 36, 32, 28, 24?
3) In the repeating pattern A, B, B, A, B, B, the next letter is A.
4) An input-output table uses the rule subtract 4. If the input is 20, the output is 16.
★ Part C: True or False?
Read each statement. Circle True or False.
1) The pattern 6, 9, 12, 15, 18 uses the rule add 3.
True
False
2) If the input is 5 and the rule is add 10, the output is 20.
True
False
3) In a growing pattern, each number is larger than the one before it.
True
False
Ready to Practice?
Complete each section carefully.
10 Questions
15-20 minutes
Auto-graded
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